Pump Service - Flotec AT250701 Manual Del Usuario

Pump Service

8. Remove four screws holding seal plate to motor.
9. Place seal plate face down on flat surface and tap out
ceramic seat (Figure 6).
Mechanical seal
ceramic seat
Figure 6
10. Remove slinger from motor shaft and inspect for dam-
age or abrasion.
11. Clean seal cavity in seal plate and clean motor shaft.
Pump Reassembly/Installing New Seal
1. Ceramic seat must be clean and free of dirt, grease,
dust, etc. Wet outer edge with small amount of liquid
detergent; press ceramic seat into seal plate cavity
firmly and squarely with finger pressure (Figure 7).
Polished
surface
Figure 7
For parts or assistance, call Flotec Customer Service at
Rubber
surface
2. If ceramic seat will not locate properly, remove it,
place face up on bench and reclean cavity. Ceramic
seat should now locate.
3. If seat still will not locate properly, place a cardboard
washer over the polished face and use a piece of 3/4"
(19mm) standard pipe for pressing purposes.
NOTICE: Be sure not to scratch or mar polished sur-
face or seal will leak.
4. Replace slinger on end of motor shaft so that impeller
sleeve will push it into position. If slinger shows signs
of wear or damage, replace it.
5. Remount seal plate on motor. Tighten bolts to 60-80
inch-lbs. (69-92 kg/cm) torque.
6. Apply a small amount of liquid detergent to inside
diameter of rotating half of seal.
7. Slide rotating seal member, polished carbon face out,
over impeller sleeve until rubber drive ring hits back
of impeller.
NOTICE: Be sure not to nick or scratch polished seal
face; seal will leak if face is damaged.
8. Screw impeller onto shaft (clockwise); this will auto-
matically locate seal in seal plate.
9. Mount diffuser on seal plate; tighten screws to 10-14
inch-lbs. (11.2-16.1 kg/cm) torque.
10. Assemble motor and seal plate to pump body with
nuts, flat washers and lock washers. Torque nuts to
120-130 in-lbs. (138-150 kg/cm).
11. Prime pump according to instructions on Page 8.
1-800-365-6832
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